#! /bin/echo This file must be sourced inside (ba)sh using: .
#
#   @configure_input@
#
#   Shell initialization for the GNUstep environment.
#
#   Copyright (C) 1997-2002 Free Software Foundation, Inc.
#
#   Author:  Scott Christley <scottc@net-community.com>
#   Author:  Adam Fedor <fedor@gnu.org>
#   Author:  Richard Frith-Macdonald <rfm@gnu.org>
#   Author:  Nicola Pero <n.pero@mi.flashnet.it>
#
#   This file is part of the GNUstep Makefile Package.
#
#   This library is free software; you can redistribute it and/or
#   modify it under the terms of the GNU General Public License
#   as published by the Free Software Foundation; either version 2
#   of the License, or (at your option) any later version.
#   
#   You should have received a copy of the GNU General Public
#   License along with this library; see the file COPYING.LIB.
#   If not, write to the Free Software Foundation,
#   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#

# Warning - this shell script is delicate, because it is sourced by
# using . rather than simply executed.  It is sourced because that is
# the only way to change the shell variables in the calling
# environment.
#
# Sourcing makes the shell script more delicate for the following reasons:
#
#  * temporary variables are automatically set in the calling
#  environment!  WORKAROUND: we need to unset all them after using
#  them to avoid polluting the calling environment;
#
#  * not only the exit value of the script, but the exit value of each
#  command we execute, might be interpreted by the calling
#  environment.  Typically, the calling environment might be using the
#  shell errexit option ('set -e') in bash parlance, which causes the
#  shell to exit if any command returns an error value.  If this were
#  a normal script, this option would mean that the shell would exit
#  if the return value of the whole script were an error value; but
#  because we are sourced, it is as all the commands in this script
#  were executed directly in the calling environment, so *all* values
#  returned by *all* commands must be non-error.  [this all typically
#  happens in rpm builds, where scripts are run with the errexit
#  option so that errors in scripts abort the build, and now if a
#  script sources GNUstep.sh, then we are exactly in this situation -
#  if any command inside GNUstep.sh returns an error value (even if
#  GNUstep.sh as a whole would be happy and return succes), the whole
#  rpm build process aborts!]. WORKAROUND: we must make sure all
#  commands return success - last resorts hacks like 'command || :'
#  which always returns success whatever command returns.
#

# If we're running in zsh (auch!) make sure we're using -y
# (SH_WORD_SPLIT) else our path manipulations won't work.
if [ -n "$ZSH_VERSION" ]; then

  # If -y is not already set, set it and remember that we
  # need to set it back to what it was at the end.
  if ( setopt | grep shwordsplit > /dev/null ); then :; else
    set -y
    GS_ZSH_NEED_TO_RESTORE_SET=yes
  fi

fi

#
# Set the GNUstep system root and local root
#
GNUSTEP_ROOT=@GNUSTEP_ROOT@
GNUSTEP_SYSTEM_ROOT=@prefix@
GNUSTEP_FLATTENED=@GNUSTEP_FLATTENED@
if [ -z "$LIBRARY_COMBO" ]; then
  LIBRARY_COMBO=@ac_cv_library_combo@
fi
export GNUSTEP_ROOT GNUSTEP_SYSTEM_ROOT GNUSTEP_FLATTENED LIBRARY_COMBO

GNUSTEP_MAKEFILES=$GNUSTEP_SYSTEM_ROOT/@MAKEFILES_SUFFIX@
export GNUSTEP_MAKEFILES

GNUSTEP_LOCAL_ROOT=@GNUSTEP_LOCAL_ROOT@
GNUSTEP_NETWORK_ROOT=@GNUSTEP_NETWORK_ROOT@
export GNUSTEP_LOCAL_ROOT GNUSTEP_NETWORK_ROOT

# If multi-platform support is disabled, just use the hardcoded cpu,
# vendor and os determined when gnustep-make was configured.  The
# reason using the hardcoded ones might be better is that config.guess
# and similar scripts might even require compiling test files to
# determine the platform - but then you can't source GNUstep.sh
# without having gcc, binutils, libc6-dev installed.  Which can be a
# problem for end-users who are not developers and have no development
# tools installed.  To prevent this problem, unless we were configured
# to determine the platform at run time, by default we use the
# hardcoded values of GNUSTEP_HOST*.
if [ -z "@GNUSTEP_MULTI_PLATFORM@" ]; then
  GNUSTEP_HOST=@target@
  GNUSTEP_HOST_CPU=@clean_target_cpu@
  GNUSTEP_HOST_VENDOR=@clean_target_vendor@
  GNUSTEP_HOST_OS=@clean_target_os@
fi

#
# Determine the host information
#
if [ -z "$GNUSTEP_HOST" ]; then
  # Not all shells (e.g. /bin/sh on FreeBSD < 4.0 or ash) have pushd/popd
  tmpdir=`pwd`; cd /tmp
  GNUSTEP_HOST=`$GNUSTEP_MAKEFILES/config.guess`
  GNUSTEP_HOST=`$GNUSTEP_MAKEFILES/config.sub $GNUSTEP_HOST`
  cd "$tmpdir"
  unset tmpdir
fi

if [ -z "$GNUSTEP_HOST_CPU" ]; then
  GNUSTEP_HOST_CPU=`$GNUSTEP_MAKEFILES/cpu.sh $GNUSTEP_HOST`
  GNUSTEP_HOST_CPU=`$GNUSTEP_MAKEFILES/clean_cpu.sh $GNUSTEP_HOST_CPU`
fi

if [ -z "$GNUSTEP_HOST_VENDOR" ]; then
  GNUSTEP_HOST_VENDOR=`$GNUSTEP_MAKEFILES/vendor.sh $GNUSTEP_HOST`
  GNUSTEP_HOST_VENDOR=`$GNUSTEP_MAKEFILES/clean_vendor.sh $GNUSTEP_HOST_VENDOR`
fi

if [ -z "$GNUSTEP_HOST_OS" ]; then 
  GNUSTEP_HOST_OS=`$GNUSTEP_MAKEFILES/os.sh $GNUSTEP_HOST`
  GNUSTEP_HOST_OS=`$GNUSTEP_MAKEFILES/clean_os.sh $GNUSTEP_HOST_OS`
fi

export GNUSTEP_HOST GNUSTEP_HOST_CPU GNUSTEP_HOST_VENDOR GNUSTEP_HOST_OS

#
# Ask the user_home tool for the root path.
#
if [ -z "$GNUSTEP_FLATTENED" ]; then
  GNUSTEP_USER_ROOT=`$GNUSTEP_MAKEFILES/$GNUSTEP_HOST_CPU/$GNUSTEP_HOST_OS/user_home user`
else
  GNUSTEP_USER_ROOT=`$GNUSTEP_MAKEFILES/user_home user`
fi

export GNUSTEP_USER_ROOT

#
# GNUSTEP_PATHLIST is like an abstract path-like shell
# variable, which can be used to search the gnustep directories - and
# in these scripts, it is also used to set up other shell variables
#
if [ -z "$GNUSTEP_PATHLIST" ]; then

  # If we need to convert win32 paths, this is the time!
  if [ -z "`echo $GNUSTEP_SYSTEM_ROOT | sed 's|^[a-zA-Z]:/.*$||'`" ]; then
    G_U_R=`$GNUSTEP_MAKEFILES/fixpath.sh -u "$GNUSTEP_USER_ROOT"`
    G_L_R=`$GNUSTEP_MAKEFILES/fixpath.sh -u "$GNUSTEP_LOCAL_ROOT"`
    G_N_R=`$GNUSTEP_MAKEFILES/fixpath.sh -u "$GNUSTEP_NETWORK_ROOT"`
    G_S_R=`$GNUSTEP_MAKEFILES/fixpath.sh -u "$GNUSTEP_SYSTEM_ROOT"`
  else
    G_U_R="$GNUSTEP_USER_ROOT"
    G_L_R="$GNUSTEP_LOCAL_ROOT"
    G_N_R="$GNUSTEP_NETWORK_ROOT"
    G_S_R="$GNUSTEP_SYSTEM_ROOT"
  fi

  # Now we basically want to build
  # GNUSTEP_PATHLIST="$G_U_R:$G_L_R:$G_N_R:$G_S_R"
  # but we want to remove duplicates.

  # Start with $G_U_R:$G_L_R - or $G_U_R if they are the same
  if [ "$G_L_R" != "$G_U_R" ]; then
    GNUSTEP_PATHLIST="$G_U_R:$G_L_R"
  else
    GNUSTEP_PATHLIST="$G_U_R"
  fi

  # Now append $G_N_R but only if different from what already there
  if [ "$G_N_R" != "$G_U_R" ]; then
    if [ "$G_N_R" != "$G_L_R" ]; then
      GNUSTEP_PATHLIST="$GNUSTEP_PATHLIST:$G_N_R"
    fi
  fi

  # Now append $G_S_R but only if different from what already there
  if [ "$G_S_R" != "$G_U_R" ]; then
    if [ "$G_S_R" != "$G_L_R" ]; then
      if [ "$G_S_R" != "$G_N_R" ]; then
        GNUSTEP_PATHLIST="$GNUSTEP_PATHLIST:$G_S_R"
      fi
    fi
  fi

  unset G_U_R
  unset G_L_R
  unset G_N_R
  unset G_S_R

  export GNUSTEP_PATHLIST
fi

#
# Add path to Tools to PATH
#
tmp_IFS="$IFS"
IFS=:
temp_path=
for dir in $GNUSTEP_PATHLIST; do

  # Prepare the path_fragment
  if [ -z "$GNUSTEP_FLATTENED" ]; then
    path_fragment="$dir/Tools:$dir/Tools/${GNUSTEP_HOST_CPU}/${GNUSTEP_HOST_OS}/${LIBRARY_COMBO}:$dir/Tools/${GNUSTEP_HOST_CPU}/${GNUSTEP_HOST_OS}"
  else
    path_fragment="$dir/Tools"
  fi

  # Add it to temp_path
  if [ -z "$temp_path" ]; then
    temp_path="$path_fragment"
  else
    temp_path="$temp_path:$path_fragment"
  fi

  unset path_fragment

done
IFS="$tmp_IFS"
unset tmp_IFS
unset dir
if [ -z "$PATH" ]; then
  PATH="$temp_path"
else
  if ( echo ${PATH}| grep -v "${temp_path}" >/dev/null ); then
    PATH="${temp_path}:${PATH}"
  fi
fi
unset temp_path
export PATH

. $GNUSTEP_MAKEFILES/ld_lib_path.sh

tmp_IFS="$IFS"
IFS=:
gnustep_class_path=
for dir in $GNUSTEP_PATHLIST; do

  if [ -z "$gnustep_class_path" ]; then
    gnustep_class_path="$dir/Library/Libraries/Java"
  else
    gnustep_class_path="$gnustep_class_path:$dir/Library/Libraries/Java"
  fi

done
IFS="$tmp_IFS"
unset tmp_IFS
unset dir

if [ -z "$CLASSPATH" ]; then
  CLASSPATH="$gnustep_class_path"
else
  if ( echo ${CLASSPATH}| grep -v "${gnustep_class_path}" >/dev/null ); then
    CLASSPATH="$CLASSPATH:$gnustep_class_path"
  fi
fi

unset gnustep_class_path
export CLASSPATH

#
# Setup path for loading guile modules too.
#
old_IFS="$IFS"
IFS=:
guile_paths=
for dir in $GNUSTEP_PATHLIST; do

  if [ -z "$guile_paths" ]; then
    guile_paths="$dir/Library/Libraries/Guile"
  else
    guile_paths="$guile_paths:$dir/Library/Libraries/Guile"
  fi

done
IFS="$old_IFS"
unset old_IFS
unset dir

if [ -z "$GUILE_LOAD_PATH" ]; then
  GUILE_LOAD_PATH="$guile_paths"
else
  if ( echo ${GUILE_LOAD_PATH}| grep -v "${guile_paths}" >/dev/null ); then
    GUILE_LOAD_PATH="$guile_paths:$GUILE_LOAD_PATH"
  fi
fi
export GUILE_LOAD_PATH
unset guile_paths


#
# Perform any user initialization
#
if [ -f "$GNUSTEP_USER_ROOT/GNUstep.sh" ]; then
  . "$GNUSTEP_USER_ROOT/GNUstep.sh"
fi

if [ -n "$GS_ZSH_NEED_TO_RESTORE_SET" ]; then
  set +y
fi
# EOF
